Dipper-tooth.



40 View in side elevation thereof.

'WALTER BRINTON, 0F WILMINGTON, Il."

ELAUVARE, ASSEGNGP. T AMEftICi-l MRZ GNESE STEEL COMYANY, OF AUGUSTA,MAINE, A CQEPRTLON 0l? MNE.

DIPPEVTQOTH.

,arianne To ZZ 'whom 'it may concern.'

Be it known that l. 'Winrnn Bniiv'rox. a citizen o'f the United Statesjand a resident ot 1h02 Vilashington street. Wilmington, in

5 Jthe county of New Castle and State ot llelaware` have made andinvented certain new and useful linproveinents in Dipperleeth, of whichthevillollowing is a specification.

lilly invention relates to an iinln'ovenient lo in dipper teeth for usein connection with steam shovels and the like, the object being,V

to produce a tooth having an interchange.- able and reversible. type otpoint so constructed and assembled with the body or l5 shank as toprevent any possible wear oecui-ringl at those places where the twoparts' of the tooth are fitted together. l

A further object ot' the invention is to provide a tooth wherein theremovable point shall beprorided with smooth andunbrolten wearing'surfaces7 in order toA reduce the 'trirtional resistance, offered bysuch while in servire, to a niininiuin.A the point, and the nose of the.shank to which the point is 2.5 fitted, being possessed ot the necessarystrength to withstand the enormous strains iniposed thereon. l

[it further object ol the, invention is to construct the tooth so thatthe provision of a slot in the nose ot' the .shank tor the reception oithe dotacliable point is obviated. and with these and other ends in viewconsists in certain novel .features ot' construction and conibixultionsoi parts as will be hereinafter Afully described and pointed out in theclaims..

In the accompanying; drawings. Figure 'l is a vplan view of a toothconstructed in accordance with niy invention. Fig. 2 is a Fig. 3 is ahorizontal sectional view taken on 'the line -l-i of Fig. i). lookinglin the direction as indicated by the arrow. hier. l is a verticalsectional View taken on the line Jf-Jc ot Fig. L looking" in thedirection as indicated by 'the arrow. Fig. 5 is a sectional view takenY'on the line 5-5 of Fig, 3. Fig. (3 is a view in perspective showing`the formation of the nose or forward end ol" the. body or shank of the.tooth. Fig. 7 is a detached View in perspective olf onel oi the lreyslor securing the point to the body of the tooth.

ly reference to the d 'awings, it will be seen that the tooth, as usual,comprises two parts, a hotly or shank l()v and a detachableSpecification of Letters Patent.

Patented Nor. 22%,

point ll, the former being bifurcated 'to forni the two jaws l2, i3,between which tits the edge ol' the bucket or shovel (not shown).

is clem-l51 shown in Fig. (i, the 'forward end of the shank is formedwith a. nose lll, the tour sides of which slightly converge toward theextreme forward end. giving to the nose the shape or torni of atruncated pyramid.. the base thereo' being' somewhat smaller in diameterthan thelorwarld end o' the shank. thereby in'oviding` a shoidder orwall l5 around the 'four sides of the nose, against which vabuts vtheextreme rear end of the. reversible point as hereinafter described.Across the smaller or forward end ofthe nose ll extends the rib orprojection lo adapted to lit into a recess o'll correspondn inf.; sizeformed in the detachable point ll., for the purpose ol assisting,` inholding the parts in their proper relative positions and avoidingr anyvertical play or movement ot' the point upon the shank when the tooth isin service.

The detachable point l1. is constructed with a fmwv'ard or solid wearingportion. the rear portion being hollowed out to torni a shroud orhousing' l? for the nose 14:, the sides 1S of the point being parallel,while the upper and lower sides 19 il() converge toward the extren'iesharpened or difging t, edge 2l thereof.y said point beingl symmetricalabout its longitudinal axis in order to render the saine reversible onthe shank. the inner surfaces of the walls ot' the htmsing l?liniinishingr in'thickness toward the rear edge. to contorni to theshape of' the noso ll,

saidv rear edge 22 or' the housingalnitting or inniinging against thewall or shoulder l5 as clearly illustrated in 25 and il oit the drawing.By thus tightly iittingg'the solidly 'formed nose il in the housing l?,and causing the forward end of the nose and rih 1G 'toi-ined integrallythereon to snugly lift a gainst the solid forward portion of the point`and by ca using` the rear end o'thepoint to abut or impinge against thcwall or shoulder 15, any strain imposed upon the point where the toothis in service. will he imparted directly to the shank l0, the saineresult being 0htained as though the two parts were made integral, andavoiding the objections her tofore raised against the ordinary forni oftooth wherein much of the strainfwas iniparted to the bolts or otherfastening means s

